Investigations of the quadrature phase impact on the behavior of the Liu & Mahadevan's criterion for fully reversed bending-torsion experiments

摘要

The present paper focuses on stress-based criterion of Liu & Mahadevan. A computation of this criterion from an implementation of a numerical procedure based on stress solutions leading to unit criterion is proposed. This approach is supported by an analytic analysis for brittle steel materials for validating the numerical study. A singular behavior of the criterion is observed for in-quadrature phase of stresses, when fully reversed bending-torsion experiments are considered. A comparison of results with some experimental data provided by literature is performed.